Zhao Erhu, a former street thug, is reborn in 1983. Remembering how he once fell in with a criminal gang and ended up serving a disastrous prison sentence, he resolves to turn over a new leaf. Breaking away from the gang boss Wang Gang, he strives to join the sugar factory's security department. Despite constant trouble from Sun Xiaofei, the deputy factory director's son, Zhao Erhu stands out in the recruitment assessment through his exceptional courage and experience from his previous life. After joining the department, he solves a series of major theft cases and earns the public's respect by saving lives. While protecting his friends, family, and beloved Lin Wenwen, he secretly remains on guard against the upcoming crackdown and hidden criminal conspiracies, beginning a new life of triumph in the 1980s.